Hi,
I am using i.MX7d sabre dev board and trying to read device UNIQUE_ID. In my case HW_OCOTP_TESTER* are 0. These fields do not contain any information. Any idea what could be wrong? Do I need to enable any specific config to get the UNIQUE_ID ?
Thanks,
Shashi Ray
Solved! Go to Solution.
Which way you are reading the ID?
I just made sure that I can read it fine from sysfs of the Linux running on sabre board:
root@imx7dsabresd:~# cat /sys/fsl_otp/HW_OCOTP_TESTER[0-1]
0xce18b953
0x375
root@imx7dsabresd:~#
And I could read it with "fuse" u-boot comand as well:
=> fuse read 0 1 2
Reading bank 0:
Word 0x00000001: ce18b953 00000375
=>
Have a great day,
Victor
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Dear Victor,
I am trying 1st option that you have mentioned.
root@imx7dsabresd:~# cat /sys/fsl_otp/HW_OCOTP_TESTER[0-1]
0xce18b953
0x375
But not able to get any data.
What output you care getting?
Did you try u-boot way also?
Have a great day,
Victor
Which way you are reading the ID?
I just made sure that I can read it fine from sysfs of the Linux running on sabre board:
root@imx7dsabresd:~# cat /sys/fsl_otp/HW_OCOTP_TESTER[0-1]
0xce18b953
0x375
root@imx7dsabresd:~#
And I could read it with "fuse" u-boot comand as well:
=> fuse read 0 1 2
Reading bank 0:
Word 0x00000001: ce18b953 00000375
=>
Have a great day,
Victor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------